The Motorola Droid Bionic has the distinction of being the highest-powered and most-talked-about phone in Motorola’s pipeline. But how long will the Droid Bionic be able to say that with the Droid HD clicking at its heels?

Engadget received an anonymous tip that the image you see to the side is the Droid HD, another high-end Android device that’s slated to give the Samsung Galaxy S II - among other phones, including the Bionic – a run for its money. Engadget theorizes that with the “HD” name, this 4.5-inch screen might have a qHD “or even 1280×720 resolution” (I’d bet heavily on qHD being more likely). The site also guesses that slim phone is 8.5 to 9 mm thick, which puts it at just under the GS II.

As for more concrete information, the Droid HD is said to have a LED flash, 8 MP rear camera capable of filming 1080p video, and a front-facing camera for video chat. The phone also has microUSB, HDMI-out, and a port for SIM cards, which means it’s either LTE or world phone capable. A gallery showing off the Droid HD is available at Engadget.

It’s hard to keep track of the many things that Android manufacturers work on, but this leak ranks among the most interesting. If this device arrives a high-powered Android with a slim build, large screen, and fast data speeds, it will certainly be one of the most attractive options available on any carrier. That’s a whole lot of “If’s” to rely on, but we can only hope to learn more about the Droid HD soon.